Synthetic superfluid chemistry with vortex-trapped quantum impurities
Synthetic superfluid chemistry with vortex-trapped quantum impurities
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DOI：
10.1103/physrevresearch.3.023085
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发表时间：
2020-10
影响因子：
4.2
通讯作者：
M. Edmonds;M. Eto;M. Nitta
中科院分区：
文献类型：
--
作者：
M. Edmonds;M. Eto;M. Nitta
我们探讨了使用二维物质波涡旋限制玻色子量子杂质系综的效果。这在理论上使用质量不平衡的均质两组分Gross-Pitaevskii方程来建模。通过改变我们的系统的质量不平衡，我们发现即使在适度的不平衡的旋涡的形状变形，导致“桶”形的旋涡，我们量化使用多分量变分方法。计算了杂质携带涡旋对的能量，揭示了与质量有关的能量分裂。然后，我们计算的杂质，我们反过来用它来构建“共价键”的涡旋对的激发态，导致杂质介导的束缚态的预测。我们的工作开辟了一条新的途径来模拟超流体系统的合成化学反应。
We explore the effect of using two-dimensional matter-wave vortices to confine an ensemble of bosonic quantum impurities. This is modelled theoretically using a mass-imbalanced homogeneous two component Gross-Pitaevskii equation. By changing the mass imbalance of our system we find the shape of the vortices are deformed even at modest imbalances, leading to `barrel' shaped vortices; which we quantify using a multi-component variational approach. The energy of impurity carrying vortex pairs are computed, revealing a mass-dependent energy splitting. We then compute the excited states of the impurity, which we in turn use to construct `covalent bonds' for vortex pairs, leading to the prediction of impurity mediated bound states. Our work opens a new route to simulating synthetic chemical reactions with superfluid systems.